Why not try a different way to introduce your leaders...
(1) Give them 6 - 12 funny giant thought bubbles (on foam board with a pre-scribed statement or thought) and 15 seconds to decide who gets each one and then each of the four leaders holds up his/her quote at the same time and pose on stage for a photo. This gives the participants the opportunity to see what they are "saying or thinking." Obviously, the tone would be fun but not as sarcastic.
(2) Quick improv/theater game where they tell a story…you could throw them a starter statement…"once upon a time there was a…" Each person in the line-up adds a word until the story ends. This could be funny and show how the leaders can work together and finish each others thoughts….